This is the 67th most frequent Catalan word.
sigui
"Sigui" is the third-person singular present subjunctive form of "ser," meaning "be" in English.
Here, 'sigui' is used in a subjunctive form to express a desired outcome or wish.
Que sigui el que Déu vulgui.
Let it be what God wants.
In this sentence, 'sigui' serves as a subjunctive form indicating an indefinite or hypothetical situation.
No importa qui sigui el nou professor.
It doesn't matter who the new teacher is.
'Sigui' is utilized as a subjunctive imperative to express the desired situation that the book becomes interesting.